Black Dike Prospect

The Black Dike Prospect is a copper and iron mine located in King county, Washington at an elevation of 2,001 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Black Dike Prospect

Commodity

Primary: Copper
Primary: Iron

Location

State: Washington
County: King
District: Lower West Fork Miller River Area

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: In Mt. Baker-Snoqualmie National Forest In A Cherry Stem Into Alpine Lakes Wilderness

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains

Mineral Deposit Model

Not available

Orebody

Name: MAGNETITE ORE
Form: DISSEMINATED

Name: COPPER MINERALIZATION
Form: DISSEMINATED

Structure

Not available

Alterations

Not available

Rocks

Name: Diorite
Role: Host
Age Type: Host Rock Unit
Age Young: Miocene

Name: Diorite
Role: Host
Age Type: Host Rock
Age Young: Miocene

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Pyrite
Ore: Magnetite
Gangue: Sericite

Comments

Comment (Deposit): AREA CUT BY NW AND NE TRENDING JOINTS. TWO TYPES OF DEPOSITS. MAGNETITE IS DISSEMINATED IN A CLIFF, IN BLEBS AND PODS ALONG JOINT FACES, AND AS VEINS TO 1 FT WIDE. COPPER MINERALIZATION IS FOUND IN A BRECCIA PIPE 25 X 60 X 40 FT. COPPER MINERALIZATION HAS BEEN TENTATIVELY GIVEN THE INFORMAL NAME OF A BRECCIA PIPE CU DEPOSIT, FOR WHICH THERE IS NO PUBLISHED MODEL. THE TYPE OF DEPOSIT FOR THE MAGNETITE MINERALIZATION IS UNKNOWN

Comment (Workings): 3 ADITS

References

Reference (Deposit): GUALTIERI, J.L., THURBER, H.K., MILLER, M.S., MCMAHAN, A.B., AND FEDERSPIEL, 1975, MINERAL RESOURCES OF ADDITIONS TO THE ALPINE LAKES STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 75-3, P. 89, 95

Reference (Reserve-Resource): GUALTIERI AND OTHERS, 1975

Washington Gold

"Where to Find Gold in Washington" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Washington.